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New Setup Questions - Speaker Level Inputs
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<blockquote data-quote="n2audio" data-source="post: 8689947" data-attributes="member: 540940"><p>You would not want to use an amplified signal for input to a 2nd amp. 45w at 4 ohms is about 13v -- that's extremely high for any amp input.</p><p></p><p>I would use stock front speaker outputs for the pio amp's front inputs, and stock rear speaker outputs for the pio's rear AND the rockville inputs.</p><p></p><p>Regarding stock HU bass filtering -- Here's a little experiment you could do (assuming your stock radio has an aux input -- BT or wired doesn't matter)...</p><p>Get access to a speaker wire where you can connect a DMM (you can find them for <$10). Download a tone generator on your phone. Play a 100hz, maybe 200hz tone loud (phone 90%+ vol, HU ~75% vol). Measure the AC voltage -- probably 5-10v. Then play a 40 or 50hz tone and see how much the voltage drops.</p><p>If it's a lot, say - 50% it won't give you a good signal. If it's about the same or just 10 or 20% less it should be fine as the 45hz boost on the amp should allow you to make up the difference.</p></blockquote><p></p>
[QUOTE="n2audio, post: 8689947, member: 540940"] You would not want to use an amplified signal for input to a 2nd amp. 45w at 4 ohms is about 13v -- that's extremely high for any amp input. I would use stock front speaker outputs for the pio amp's front inputs, and stock rear speaker outputs for the pio's rear AND the rockville inputs. Regarding stock HU bass filtering -- Here's a little experiment you could do (assuming your stock radio has an aux input -- BT or wired doesn't matter)... Get access to a speaker wire where you can connect a DMM (you can find them for <$10). Download a tone generator on your phone. Play a 100hz, maybe 200hz tone loud (phone 90%+ vol, HU ~75% vol). Measure the AC voltage -- probably 5-10v. Then play a 40 or 50hz tone and see how much the voltage drops. If it's a lot, say - 50% it won't give you a good signal. If it's about the same or just 10 or 20% less it should be fine as the 45hz boost on the amp should allow you to make up the difference. [/QUOTE]
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New Setup Questions - Speaker Level Inputs
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